ENGINEERING THERMODYNAMICS QUIZ

The efficiency of Carnot cycle depends upon

Volume compression ratio

Cut-off ratio and compression ratio

Pressure ratio

Temperature limits

TRUE ANSWER : ?
YOUR ANSWER : ?

On volume basis, air contains following parts of oxygen

77

21

25

23

TRUE ANSWER : ?
YOUR ANSWER : ?

The efficiency of the Carnot cycle may be increased by

Decreasing the highest temperature

Increasing the lowest temperature

Keeping the lowest temperature constant

Increasing the highest temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

The general gas equation is (where p = Pressure, v = Volume, m = mass, T = Absolute temperature, and R = Gas constant)

pv = mRT

pv = RTm

pv = (RT)m

pvm = C

TRUE ANSWER : ?
YOUR ANSWER : ?

The atomic mass of sulphur is

12

32

14

16

TRUE ANSWER : ?
YOUR ANSWER : ?

If heat be exchanged in a reversible manner, which of the following property of the working substance will change accordingly

Entropy

Enthalpy

Temperature

Internal energy

TRUE ANSWER : ?
YOUR ANSWER : ?

Carnot cycle consists of

Two constant pressure and two isentropic processes

Two isothermal and two isentropic processes

One constant volume, one constant pressure and two isentropic processes

Two constant volume and two isentropic processes

TRUE ANSWER : ?
YOUR ANSWER : ?

No liquid can exist as liquid at

Zero pressure

Centre of earth

273°K

Vacuum

TRUE ANSWER : ?
YOUR ANSWER : ?

Which law states that the specific heat of a gas remains constant at all temperatures and pressures?

Joule's Law

Boyle's Law

Regnault's Law

Charles' Law

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following gas is mostly used in town for street and domestic lighting and heating?

Coke oven gas

Producer gas

Mond gas

Coal gas

TRUE ANSWER : ?
YOUR ANSWER : ?

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